Hi, i am just learning how to use MOSFET as a switch. I am watching this video So in the video, Vdd is 9V and Vin is +5V using a separate power source. Now this is confusing me. In BJT base has to be 0.6V above emitter. How does this translate to MOSFET? In other words, if Vdd was not 9V but 1000V, would it still be enough to put +5V on the gate to make MOSFET conduct or would the gate have to be at 1000V + 5V?